Moorfields railway station is an underground railway station in the city centre of Liverpool, England. The station is situated on both the Northern and Wirral Lines of the Merseyrail network. It is the third-busiest station on the Merseyrail network, and the largest underground station. It is also the only station on the network having services to all other Merseyrail stations.

The Northern line is one of two commuter rail routes operated by Merseyrail and centred on Merseyside, England, the other being the Wirral line. The cross-city route runs from Hunts Cross in south Liverpool then branches in the north to terminate at Southport, Headbolt Lane and Ormskirk (Lancashire).